About route planning:Currently, route planning can create routes (route legs) from/to line endpoints and cannot plan from/to middle of a road. The latter will be a future development.
So, place the pass-through-points near
-intersection of roads (eg. corners in a settlement)
-road type change points (eg. a dirt road becomes a path)
-real endpoints of lines (eg. end of blind alley)

Notions:-route (1): a serie of auto-planned route legs between pass-throug-points. You can see it on the map in half-transparent purple color.
-route leg: the geometry that is auto-planned between two pass-through-points on the roads, streets, paths, etc.
-pass-through-point (2): a point placed on the map by you. It is a red circle, you can see it on the map in Modify or Delete mode only.
-control line (3): straight, red lines between pass-through-points, you can do operations on routes with this line.
-route tool: set of buttons that allows you to do specific route operations.
-routing option buttons: a set of icon at the right side of the map. They only visible when it makes sense.
-route list: a tabbed list right to the map that contains the list of your routes, and the shared or official routes created by others.

How to create a route? -click the Create route tool button
-left click the point on the map where you want the next pass-through point
-repeat placing pass-through points as many times as you need

How to finish the route being created?You have three ways:
-choose other tool button than Create route
-double click left mouse button - the point where you've doubleclicked will be included as last route point
-double click right mouse button - the point where you've doubleclicked will NOT be included

How to modify existing route?First, choose the Modify route tool button and with that select the control line of appropriate route to be modified. Selected control line has red circles at pass-trough-points and half-transparent red circles at the middle of control line (4) of route legs.
You have three choices:
-move exising pass-through-points: just drag the red circles to a different point on the map,
-insert new pass-through-point: drag the half-transparent mid-points (4); this will cause the insertion of a new pass-through-point,
-delete an exising pass-through-point: hover the mouse over the red circle where you want to delete pass through point, and press the DEL key.

How to delete route?You have two choices:
-activate the Delete route tool button then click the red control line,
-click on the delete icon in the route list.

How to set routing option (eg. pedestrian, car, etc.)?Choose the appropriate icon on the right of the map. The selected option will be used for the next route leg in creation mode.
You can change routing option for an entire route in Modify mode: select the corresponding route with the Modify route tool button and then click the option icon you need:

How to save a route?You can't and you don't need to. Created routes will be automatically saved on OpenMaps's server if youre logged in.
When you're not logged you can plan routes but they won't be saved and they will be lost leaving the map page.

How to view an automatically saved route?Initially (just after getting to the map webpage) none of the routes are visible on the map. Routes are shown in the route list only.
You can load and view a route pressing the closed eye button near the route name in the route list. (The eye becomes opened.)
Clicking a closed or opened eye also causes the map to fully view that route.